Some pages still doesn't recognized by Internet Explorer as Unicode (which hurts badly non latin users):
1) Discussion page in instant messaging system (URL example: http://<site>/message/refresh.php?id=462&name=Aleksandr+Ivannikov)
2) Add/delete tag page for the blog systems after pressing "add" or "delete" button (URL example http://<site>/blog/tags.php works well first time only)
3) Insert table, smile and probably all popup pages from htmleditor (URL example http://<site>/lib/editor/htmlarea/popups/insert_table.php), insert table page also doesn't fit the window, and user can't see all controls.
I attach some examples of this behavor. Some pages (instant communicator) doesn't even react to the forced UTF-8 code page.